Comment by ALAN WARD on How are rocket engine nozzles able to survive very...
Edit - that is correct. And the SSME seem to be a further development of the same, also built by Rocketdyne.
View ArticleComment by ALAN WARD on How are rocket engine nozzles able to survive very...
@RossMillikan Good to know. A reference I could build into the answer?
View ArticleComment by ALAN WARD on Could someone use an axe to break through a locked...
The best solution is to remove the passengers. Then the door is not needed any more - less weight on board. More seriously, though, I am starting to think reinforced doors were a temporary measure that...
View ArticleComment by ALAN WARD on How do I paint an airplane with an electrostatic...
Paint on an airplane needs to be relatively thin, since an A/C has a large surface area and weight is an issue. It also needs to be tough because of the aggression of relative wind, UV light, and even...
View ArticleComment by ALAN WARD on Would adding a fairing to landing gear to spin the...
"Has this ever been considered? " -> this type of wheel cover was common among aircraft with fixed undercarriage of the 1930's. Try: Fokker D.XXI, Fokker F.32, Junkers Ju 87, Mitsubishi A5M and many...
View ArticleComment by ALAN WARD on What was the forensic process underlying the recent...
A precise citation would be nice ("Medium X stated that Y on date D"), so that we can all reference the same exact wording.
View ArticleComment by ALAN WARD on How much effect does the nose design of the plane have?
I thought the question meant "effect on the pilot's field of vision" - since, when landing, a 747's cabin is quite some distance above the ground when the main gear contacts. Agree we need more...
View ArticleComment by ALAN WARD on Why is a part from a Boeing 777 being analysed by...
It is also perhaps worth noting that Boeings have long been used by French companies (notably B737, 747, 777 and now 787 by Air France), in much the same way Airbus aircraft have been used in the...
View ArticleComment by ALAN WARD on Can an engine on a Boeing 737 fly just using...
Where does the compressed air come from? Or the electricity? You will need some energy source on board that is not too heavy. Kerosene is best for the time being for its energy/weight ratio, though...
View ArticleComment by ALAN WARD on Why don't turboprop planes have push engines that use...
@JanHudec The OP used the expression "generate more thrust". The engines do not generate more thrust, it is used more efficiently. Not quite the same. ;-)
View ArticleComment by ALAN WARD on Why are HUDs usually green instead of red?
Perhaps you could add a remark on why white is not considered as a HUD color in aviation - even though white LEDs are currently widely available. (I used one on a BMW the other day, white color, and...
View ArticleComment by ALAN WARD on Why Helicopter compulsory need helipad to land?
Maybe they needed to refuel? Just speculation - not enough information in the question to really answer this one.
View ArticleAnswer by ALAN WARD for How does a Fenestron remove or reduce the tip vortex...
There are basically two effects here:One is the ducted fan effect. Ducted fans are more efficient than open fans, specifically creating smaller vortices at the blade tips.The other is the fact that the...
View ArticleAnswer by ALAN WARD for Can fighter jets be reloaded with ammunition mid-flight?
Short answer: no.Longer answer: you would need to design a carrier craft that could store large quantities of ammunition in safe conditions - enough to supply more than one fighter, perhaps several...
View ArticleAnswer by ALAN WARD for What is the authority in the UK?
EASA: this is a European Union body, so yes, the UK is a member state.CAA: There are many Civil Aviation Authorities worldwide, basically each is a national entity within the corresponding state. So,...
View ArticleWhen crossing a mountain ridge at low height above terrain what consideration...
Some background: I am not a pilot, but a researcher studying air-flow across mountain terrain using Computational Fluid Dynamics (CFD). During my studies, I have been particularly interested by...
View ArticleAnswer by ALAN WARD for Could a blown wing ever be powerful enough to lift an...
Using the Coandă effect, it is theoretically possible for an aircraft's engines to blow enough air over the wing to generate lift. However, in a real aircraft the engines are placed so as not to place...
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